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Solid-state photochemistry and crystal structures of two non-photochromic high-temperature modifications of 2,3,4,4-tetrachloro-1-oxo-1,4-dihydronaphthalene (β-TKN)

✍ Scribed by Zweegers, F. P. A. ;Varma, C. A. G. O. ;de Graaff, R. A. G.

Book ID
114525773
Publisher
International Union of Crystallography
Year
1979
Weight
678 KB
Volume
35
Category
Article
ISSN
0567-7408

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The photochemical formation of secondary
The photochemical formation of secondary triplet spin systems from primary triplets in single crystals of photochromic 2,3,4,4-tetrachloro-1-keto-1,4-dihydronaphthalene (β-TKN)
✍ F.P.A. Zweegers; C.A.G.O. Varma 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 496 KB

Irmdktrion ofsir@e crystnfs of photochromic p-TRN u ith UV tight yields initiehy a tripIet spin system. arising from spin c~uphng between trio redice& Iouted on nei&bourinS httice sites. After prolonged irradiation. free radicals and another triplet spin system are observed in the ESR spectrum. The